./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0477687fecbd3170f65e2eb11926275d6b3232cae024dd47071f89d509b612eb ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:34:12,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:34:12,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:34:12,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:34:12,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:34:12,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:34:12,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:34:12,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:34:12,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:34:12,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:34:12,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:34:12,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:34:12,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:34:12,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:34:12,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:34:12,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:34:12,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:34:12,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:34:12,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:34:12,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:34:12,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:34:12,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:34:12,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:34:12,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:34:12,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:34:12,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:34:12,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:34:12,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:34:12,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:34:12,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:34:12,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:34:12,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:34:12,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:34:12,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:34:12,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:34:12,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:34:12,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:34:12,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:34:12,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:34:12,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:34:12,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:34:12,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:34:12,864 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:34:12,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:34:12,866 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:34:12,866 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:34:12,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:34:12,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:34:12,877 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:34:12,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:34:12,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:34:12,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:34:12,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:34:12,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:34:12,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:34:12,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:34:12,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:34:12,880 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:34:12,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:34:12,881 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:34:12,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:34:12,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:34:12,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:34:12,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:34:12,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:34:12,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:34:12,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:34:12,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:34:12,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:34:12,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:34:12,884 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:34:12,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:34:12,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:34:12,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:34:12,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0477687fecbd3170f65e2eb11926275d6b3232cae024dd47071f89d509b612eb [2021-10-28 09:34:13,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:34:13,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:34:13,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:34:13,327 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:34:13,328 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:34:13,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c [2021-10-28 09:34:13,409 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/data/1c9ddc2ba/46c7f9ca5e0f413a80231b5dc8bc7554/FLAGd3f3ee13c [2021-10-28 09:34:14,010 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:34:14,011 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c [2021-10-28 09:34:14,037 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/data/1c9ddc2ba/46c7f9ca5e0f413a80231b5dc8bc7554/FLAGd3f3ee13c [2021-10-28 09:34:14,329 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/data/1c9ddc2ba/46c7f9ca5e0f413a80231b5dc8bc7554 [2021-10-28 09:34:14,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:34:14,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:34:14,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:34:14,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:34:14,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:34:14,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:34:14" (1/1) ... [2021-10-28 09:34:14,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327680fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:14, skipping insertion in model container [2021-10-28 09:34:14,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:34:14" (1/1) ... [2021-10-28 09:34:14,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:34:14,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:34:14,580 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c[546,559] [2021-10-28 09:34:14,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:34:14,624 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:34:14,643 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c[546,559] [2021-10-28 09:34:14,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:34:14,689 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:34:14,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:14 WrapperNode [2021-10-28 09:34:14,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:34:14,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:34:14,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:34:14,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:34:14,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:14" (1/1) ... [2021-10-28 09:34:14,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:14" (1/1) ... [2021-10-28 09:34:14,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:34:14,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:34:14,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:34:14,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:34:14,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:14" (1/1) ... [2021-10-28 09:34:14,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:14" (1/1) ... [2021-10-28 09:34:14,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:14" (1/1) ... [2021-10-28 09:34:14,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:14" (1/1) ... [2021-10-28 09:34:14,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:14" (1/1) ... [2021-10-28 09:34:14,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:14" (1/1) ... [2021-10-28 09:34:14,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:14" (1/1) ... [2021-10-28 09:34:14,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:34:14,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:34:14,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:34:14,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:34:14,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:14" (1/1) ... [2021-10-28 09:34:14,817 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:34:14,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:14,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:34:14,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:34:14,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:34:14,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:34:14,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:34:14,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:34:15,287 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:34:15,287 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-28 09:34:15,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:15 BoogieIcfgContainer [2021-10-28 09:34:15,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:34:15,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:34:15,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:34:15,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:34:15,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:34:14" (1/3) ... [2021-10-28 09:34:15,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c1c36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:34:15, skipping insertion in model container [2021-10-28 09:34:15,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:14" (2/3) ... [2021-10-28 09:34:15,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c1c36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:34:15, skipping insertion in model container [2021-10-28 09:34:15,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:15" (3/3) ... [2021-10-28 09:34:15,302 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound2.c [2021-10-28 09:34:15,309 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:34:15,309 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 09:34:15,370 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:34:15,379 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:34:15,392 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 09:34:15,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 20 states have (on average 1.55) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:15,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:34:15,444 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:15,445 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:15,446 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:34:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:15,454 INFO L85 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-10-28 09:34:15,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:15,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746628245] [2021-10-28 09:34:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:15,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:15,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:15,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746628245] [2021-10-28 09:34:15,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746628245] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:15,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:15,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:34:15,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799744596] [2021-10-28 09:34:15,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:34:15,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:15,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:34:15,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:34:15,843 INFO L87 Difference]: Start difference. First operand has 23 states, 20 states have (on average 1.55) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:15,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:15,863 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2021-10-28 09:34:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:34:15,865 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-28 09:34:15,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:15,878 INFO L225 Difference]: With dead ends: 43 [2021-10-28 09:34:15,878 INFO L226 Difference]: Without dead ends: 19 [2021-10-28 09:34:15,883 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:34:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-28 09:34:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-28 09:34:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-28 09:34:15,925 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2021-10-28 09:34:15,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:15,926 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-28 09:34:15,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:15,928 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-28 09:34:15,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:34:15,930 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:15,930 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:15,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:34:15,931 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:34:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-10-28 09:34:15,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:15,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362194023] [2021-10-28 09:34:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:15,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:15,988 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:15,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998398636] [2021-10-28 09:34:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:15,990 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:15,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:15,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:16,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:34:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:16,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:34:16,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:16,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:16,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362194023] [2021-10-28 09:34:16,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:16,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998398636] [2021-10-28 09:34:16,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998398636] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:16,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:16,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:34:16,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507880040] [2021-10-28 09:34:16,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:34:16,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:16,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:34:16,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:34:16,701 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:16,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:16,923 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-10-28 09:34:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:34:16,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-28 09:34:16,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:16,925 INFO L225 Difference]: With dead ends: 29 [2021-10-28 09:34:16,926 INFO L226 Difference]: Without dead ends: 23 [2021-10-28 09:34:16,929 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:34:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-28 09:34:16,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-28 09:34:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-28 09:34:16,942 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2021-10-28 09:34:16,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:16,943 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-28 09:34:16,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-28 09:34:16,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:34:16,945 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:16,946 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:16,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:17,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:17,173 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:34:17,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:17,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2131965670, now seen corresponding path program 1 times [2021-10-28 09:34:17,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:17,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541456256] [2021-10-28 09:34:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:17,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:17,216 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:17,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032348166] [2021-10-28 09:34:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:17,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:17,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:17,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:17,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:34:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:17,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-28 09:34:17,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:17,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:17,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541456256] [2021-10-28 09:34:17,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:17,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032348166] [2021-10-28 09:34:17,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032348166] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:34:17,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:34:17,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 09:34:17,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277761379] [2021-10-28 09:34:17,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:34:17,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:17,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:34:17,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:34:17,906 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:18,158 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-10-28 09:34:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:34:18,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-28 09:34:18,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:18,160 INFO L225 Difference]: With dead ends: 32 [2021-10-28 09:34:18,162 INFO L226 Difference]: Without dead ends: 26 [2021-10-28 09:34:18,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:34:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-28 09:34:18,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-10-28 09:34:18,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-10-28 09:34:18,169 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 16 [2021-10-28 09:34:18,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:18,170 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-10-28 09:34:18,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:18,170 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-10-28 09:34:18,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:34:18,171 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:18,172 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:18,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:18,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:18,392 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:34:18,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash -582143938, now seen corresponding path program 2 times [2021-10-28 09:34:18,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:18,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799675598] [2021-10-28 09:34:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:18,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:18,428 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:18,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135039139] [2021-10-28 09:34:18,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:34:18,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:18,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:18,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:18,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:34:18,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:34:18,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:34:18,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:34:18,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:18,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:18,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799675598] [2021-10-28 09:34:18,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:18,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135039139] [2021-10-28 09:34:18,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135039139] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:18,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:18,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:34:18,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540588192] [2021-10-28 09:34:18,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:34:18,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:18,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:34:18,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:34:18,818 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:18,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:18,866 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-28 09:34:18,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:34:18,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-28 09:34:18,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:18,867 INFO L225 Difference]: With dead ends: 25 [2021-10-28 09:34:18,867 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:34:18,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:34:18,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:34:18,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:34:18,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:34:18,869 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-28 09:34:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:18,869 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:34:18,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:34:18,870 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:34:18,873 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:18,873 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:18,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:19,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:19,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:34:19,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:34:19,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:34:19,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:34:19,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:34:19,247 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-10-28 09:34:19,248 INFO L853 garLoopResultBuilder]: At program point L36-2(lines 36 46) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~z~0)) (.cse1 (<= 0 ULTIMATE.start_main_~k~0)) (.cse2 (<= ULTIMATE.start_main_~z~0 2)) (.cse3 (<= ULTIMATE.start_main_~k~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 (= ULTIMATE.start_main_~y~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1)) (<= 2 ULTIMATE.start_main_~c~0)))) [2021-10-28 09:34:19,248 INFO L857 garLoopResultBuilder]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2021-10-28 09:34:19,248 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:34:19,248 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:34:19,248 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:34:19,249 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-10-28 09:34:19,249 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-10-28 09:34:19,249 INFO L853 garLoopResultBuilder]: At program point L16-2(lines 39 40) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~z~0)) (.cse1 (<= 0 ULTIMATE.start_main_~k~0)) (.cse2 (<= ULTIMATE.start_main_~z~0 2)) (.cse3 (<= ULTIMATE.start_main_~k~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 (= ULTIMATE.start_main_~y~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1)) (<= 2 ULTIMATE.start_main_~c~0)))) [2021-10-28 09:34:19,249 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2021-10-28 09:34:19,250 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 14) no Hoare annotation was computed. [2021-10-28 09:34:19,250 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2021-10-28 09:34:19,250 INFO L860 garLoopResultBuilder]: At program point L16-5(lines 15 21) the Hoare annotation is: true [2021-10-28 09:34:19,250 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 14) no Hoare annotation was computed. [2021-10-28 09:34:19,250 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2021-10-28 09:34:19,250 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:34:19,251 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-10-28 09:34:19,251 INFO L857 garLoopResultBuilder]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2021-10-28 09:34:19,251 INFO L857 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-10-28 09:34:19,251 INFO L857 garLoopResultBuilder]: For program point L13-2(line 13) no Hoare annotation was computed. [2021-10-28 09:34:19,251 INFO L857 garLoopResultBuilder]: For program point L13-4(line 13) no Hoare annotation was computed. [2021-10-28 09:34:19,251 INFO L857 garLoopResultBuilder]: For program point L13-6(line 13) no Hoare annotation was computed. [2021-10-28 09:34:19,252 INFO L860 garLoopResultBuilder]: At program point L51(lines 22 52) the Hoare annotation is: true [2021-10-28 09:34:19,255 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-10-28 09:34:19,257 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:34:19,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:34:19 BoogieIcfgContainer [2021-10-28 09:34:19,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:34:19,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:34:19,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:34:19,276 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:34:19,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:15" (3/4) ... [2021-10-28 09:34:19,280 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:34:19,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-28 09:34:19,294 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:34:19,294 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:34:19,294 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:34:19,341 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:34:19,341 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:34:19,343 INFO L168 Benchmark]: Toolchain (without parser) took 5008.06 ms. Allocated memory was 77.6 MB in the beginning and 115.3 MB in the end (delta: 37.7 MB). Free memory was 56.1 MB in the beginning and 60.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:19,343 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 77.6 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:34:19,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.52 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 55.8 MB in the beginning and 70.3 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:19,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.18 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 68.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:19,345 INFO L168 Benchmark]: Boogie Preprocessor took 53.02 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 67.7 MB in the end (delta: 937.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:34:19,345 INFO L168 Benchmark]: RCFGBuilder took 486.22 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 57.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:19,346 INFO L168 Benchmark]: TraceAbstraction took 3982.64 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 57.3 MB in the beginning and 63.3 MB in the end (delta: -6.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:19,347 INFO L168 Benchmark]: Witness Printer took 65.18 ms. Allocated memory is still 115.3 MB. Free memory was 63.3 MB in the beginning and 60.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:19,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 77.6 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.52 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 55.8 MB in the beginning and 70.3 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.18 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 68.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.02 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 67.7 MB in the end (delta: 937.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 486.22 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 57.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3982.64 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 57.3 MB in the beginning and 63.3 MB in the end (delta: -6.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Witness Printer took 65.18 ms. Allocated memory is still 115.3 MB. Free memory was 63.3 MB in the beginning and 60.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 71 SDslu, 94 SDs, 0 SdLazy, 139 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 109 HoareAnnotationTreeSize, 4 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 389 SizeOfPredicates, 20 NumberOfNonLiveVariables, 252 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 7/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((1 <= z && 0 <= k) && z <= 2) && k <= 2) && 1 == cond) && 1 <= c) && x == 1) && z == y) || (((((((1 <= z && 0 <= k) && z <= 2) && 1 <= cond) && k <= 2) && y == z * z) && x == z + 1) && 2 <= c) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((1 <= z && 0 <= k) && z <= 2) && k <= 2) && 1 <= c) && x == 1) && z == y) || (((((((1 <= z && 0 <= k) && z <= 2) && 1 <= cond) && k <= 2) && y == z * z) && x == z + 1) && 2 <= c) RESULT: Ultimate proved your program to be correct! [2021-10-28 09:34:19,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05b6f17-138a-479d-9154-09a7845531ae/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...